Salting sealing structure of salt bath nitriding furnace

Abstract

The utility model relates to a salt bath nitriding furnace salt adding sealing structure, and belongs to the technical field of salt bath nitriding furnaces, the salt bath nitriding furnace salt adding sealing structure comprises a furnace wall, two heating assemblies and one inner furnace pipe, the two heating assemblies are fixedly installed on the inner side wall of the furnace wall, and the inner furnace pipe is fixedly installed on the inner side wall of the furnace wall; a supporting mechanism is arranged on the outer side of the furnace wall, two moving mechanisms are arranged on the supporting mechanism, a sealing mechanism is arranged on the supporting mechanism, a feeding mechanism is arranged on the sealing mechanism, a material fixing mechanism is arranged on the sealing mechanism, and a material guiding mechanism is arranged on the material fixing mechanism. According to the salt-adding sealing structure of the salt bath nitriding furnace, firstly, base salt or adjusting salt is quantitatively added into the storage bin through the quantitative tank, and then the storage bin is sealed, so that toxic gas in the nitriding furnace cannot be released during feeding, the safety of workers is improved, and the personal safety of the workers is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of salt bath nitriding furnaces, and in particular to a salt bath nitriding furnace salt adding sealing structure. Background Art

[0002] The industry usually uses salt bath soft nitriding treatment equipment to perform surface hardening treatment on metal parts such as crankshafts. The specific operation is to heat the salt bath agent composed of nitrates and nitrites in a salt bath furnace at a specified temperature to become a molten salt solution, and then immerse the metal parts in it to achieve surface hardening treatment of the metal parts.

[0003] In the nitriding or nitrocarburizing process, the parts are placed in a nitriding furnace filled with molten base salt. The base salt will undergo a chemical reaction at a high temperature of about 500°C, producing a large amount of toxic substances such as ammonia gas and cyanide containing cyanide, which will cause certain harm to the health of the operators while working; especially during the process, due to factors such as the workpiece being carried out, the workpiece reacting with the salt bath, and the volatilization of the salt bath, the volume of the nitriding salt bath in the nitriding furnace will gradually decrease, and the liquid level will drop. It is necessary to add corresponding base salt or adjustment salt to the nitriding furnace to raise the salt bath liquid level. During the addition process, the base salt or adjustment salt will instantly release a large amount of toxic gas and dust, including steam volatilized from the salt solution. The toxic gas and dust will be released through the salt adding port in a short time, affecting the health of the workers. Therefore, the present application proposes a salt bath nitriding furnace salt adding sealing structure to solve the above technical problems. Utility Model Content

[0004] In view of the shortcomings of the prior art, the present application provides a salt-adding sealing structure for a salt bath nitriding furnace, which has the advantages of improving safety, etc., and solves the problem that during the process of adding base salt or adjustment salt, the base salt or adjustment salt will instantly release a large amount of toxic gas and dust, including steam volatilized from the salt solution. Toxic gas and dust will be released through the salt adding port in a short time, affecting the health of workers.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a salt bath nitriding furnace salt adding sealing structure, comprising a furnace wall, two heating components and one inner furnace core, the two heating components are fixedly mounted on the inner side wall of the furnace wall, the inner furnace core is fixedly mounted on the inner side wall of the furnace wall, a supporting mechanism is arranged on the outer side of the furnace wall, two moving mechanisms are arranged on the supporting mechanism, a sealing mechanism is arranged on the supporting mechanism, a feeding mechanism is arranged on the sealing mechanism, a material setting mechanism is arranged on the sealing mechanism, and a material guiding mechanism is arranged on the material setting mechanism;

[0006] The support mechanism includes two support plates, a support column, and a movable sleeve. The two support plates are fixedly installed on the outer side of the furnace wall, the support column is fixedly installed on the top of the support plate, and the movable sleeve is slidably connected to the outer side of the support column.

[0007] By adopting the above technical scheme, the base salt or adjustment salt to be added is added to the quantitative tank through the feed port, and at the same time, the servo motor drives the screw to rotate, and the screw drives the movable plate connected to the outer thread to move up and down, and the movable plate drives the quantitative plate at the bottom of the connecting rod to move up and down, so that the capacity of the quantitative tank can be adjusted, so that the amount of base salt or adjustment salt added can be guaranteed according to the quantitative tank, thereby ensuring the accurate addition of the base salt or adjustment salt, opening the second valve, and opening the solenoid valve, so that the base salt or adjustment salt on the quantitative plate will enter the storage bin through the guide pipe, when the base salt or adjustment salt enters the storage bin, close the second valve, and then open the first valve, so that the base salt or adjustment salt in the storage bin will enter the inner furnace through the feed pipe, thereby completing the feeding of the nitriding furnace, in this way, the base salt or adjustment salt is first quantitatively added to the storage bin through the quantitative tank, and then the storage bin is sealed, so that the toxic gas in the nitriding furnace will not be released during the feeding, thereby improving the safety of the staff and ensuring the personal safety of the staff.

[0008] Furthermore, the two moving mechanisms include a rack, an AC motor, and a gear. An installation groove is opened on the outer side of the support column, the rack is fixedly installed on the inner wall of the installation groove, the AC motor is fixedly installed on the side of the moving sleeve away from the furnace wall, and the gear is fixedly installed on the output shaft end of the AC motor and the gear and the rack are meshed.

[0009] By adopting the above technical solution, the movable sleeve can be driven to move through the liquid mechanism, so that the furnace cover fixedly installed between the movable sleeves can complete the opening and closing action.

[0010] Furthermore, a T-shaped slide groove is provided on one side of the support column close to the furnace wall, and a T-shaped sliding block slidably connected in the T-shaped slide groove is fixedly installed on the inner side wall of the movable sleeve.

[0011] By adopting the above technical solution, the moving sleeve has better stability when moving up and down.

[0012] Furthermore, the sealing mechanism includes a furnace cover, a first sealing ring and a second sealing ring. The furnace cover is fixedly installed between the outer sides of the two movable sleeves, the first sealing ring is fixedly installed at the bottom of the furnace cover, and the second sealing ring is fixedly installed at the bottom of the furnace cover and is located on the inner side of the first sealing ring.

[0013] By adopting the above technical solution, the sealing performance of the furnace cover can be improved by the first sealing ring and the second sealing ring, thereby ensuring that the toxic gas in the nitriding furnace will not leak.

[0014] Furthermore, the feeding mechanism includes a feeding pipe, a first valve, a material storage bin, the material guide pipe, a second valve and a quantitative tank, the feeding pipe is fixedly connected to the top of the furnace cover, the first valve is fixedly installed on the outside of the feeding pipe, the material storage bin is fixedly connected to the top of the feeding pipe, the material guide pipe is fixedly connected to the top of the material storage bin, the second valve is fixedly installed on the outside of the material guide pipe, and the quantitative tank is fixedly connected to the top of the material guide pipe.

[0015] By adopting the above technical solution, base salt or adjustment salt can be added to the nitriding furnace through the feeding mechanism.

[0016] Furthermore, the metering mechanism includes a support rod, a top plate, a fixed plate, a guide rod, a servo motor, a screw rod, a movable plate, a connecting rod and a quantitative plate. The number of the support rods is two, and the two support rods are fixedly installed on the top of the furnace cover. The top plate is fixedly installed between the tops of the two support rods, the fixed plate is fixedly installed on the outside of the support rods, the guide rod is fixedly installed between the top plate and the fixed plate, the servo motor is fixedly installed on the top of the top plate, the screw rod is fixedly installed on the output shaft end of the servo motor, the movable plate is threadedly connected to the outside of the screw rod and slidably connected to the outside of the guide rod, the connecting rod is fixedly installed at the bottom of the movable plate, and the quantitative plate is fixedly installed at the bottom of the connecting rod.

[0017] By adopting the above technical solution, the amount of base salt or adjustment salt added to the nitriding furnace can be accurately controlled through the metering mechanism.

[0018] Furthermore, the material guiding mechanism includes a feed port, two feed pipes, a solenoid valve and a material guiding plate. The feed port is fixedly installed on the inner side of the top plate and is fixedly connected to the quantitative tank. The two feed pipes are fixedly connected to the bottom of the quantitative plate. The solenoid valve is fixedly installed on the outer side of the feed pipe, and the material guiding plate is fixedly installed on the inner wall of the quantitative tank.

[0019] By adopting the above technical solution, the base salt or adjustment salt to be added can be ensured to enter the nitriding furnace better through the material guiding mechanism.

[0020] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0021] The salt bath nitriding furnace salt adding sealing structure adds the base salt or adjustment salt to be added into the quantitative tank through the feed port, and at the same time, the servo motor drives the screw rod to rotate, and the screw rod drives the movable plate connected with the outer thread to move up and down, and the movable plate drives the quantitative plate at the bottom of the connecting rod to move up and down, so that the capacity of the quantitative tank can be adjusted, so that the amount of base salt or adjustment salt added can be guaranteed according to the quantitative tank, and then the addition of the base salt or adjustment salt is guaranteed to be accurate, the second valve is opened, and the solenoid valve is opened, so that the base salt or adjustment salt on the quantitative plate will enter the storage bin through the guide pipe, when the base salt or adjustment salt enters the storage bin completely, the second valve is closed, and the first valve is opened again, so that the base salt or adjustment salt in the storage bin will enter the inner furnace through the feed pipe, so as to complete the feeding of the nitriding furnace, so that the base salt or adjustment salt is quantitatively added to the storage bin through the quantitative tank, and then the storage bin is sealed, so that the toxic gas in the nitriding furnace will not be released during the feeding, thereby improving the safety of the staff and ensuring the personal safety of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the main structure diagram of this application;

[0023] Figure 2 This is a schematic diagram of the cross-sectional structure of this application;

[0024] Figure 3 This is a partial enlarged structural diagram of this application;

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the material guide plate and the tapered groove of the utility model.

[0026] In the figure: 1. furnace wall; 2. heating component; 3. inner furnace; 4. support plate; 5. support column; 6. movable sleeve; 71. mounting groove; 72. rack; 73. AC motor; 74. gear; 8. furnace cover; 9. first sealing ring; 10. second sealing ring; 11. feed pipe; 12. first valve; 13. storage bin; 14. guide pipe; 15. second valve; 16. quantitative tank; 171. support rod; 172. top plate; 173. fixed plate; 174. guide rod; 175. servo motor; 176. screw rod; 177. movable plate; 178. connecting rod; 179. quantitative plate; 18. feed port; 19. feeding pipe; 20. solenoid valve; 21. guide plate; 211. conical groove. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] See also Figure 1-2 A salt bath nitriding furnace salt adding sealing structure in this embodiment includes a furnace wall 1, two heating components 2 and one inner furnace 3, the two heating components 2 are fixedly installed on the inner wall of the furnace wall 1, the inner furnace 3 is fixedly installed on the inner wall of the furnace wall 1, a supporting mechanism is arranged on the outer side of the furnace wall 1, two moving mechanisms are arranged on the supporting mechanism, and a sealing mechanism is arranged on the supporting mechanism.

[0029] The supporting mechanism includes two supporting plates 4, supporting columns 5, and a movable sleeve 6. The two supporting plates 4 are fixedly installed on the outer side of the furnace wall 1, and the supporting columns 5 are fixedly installed on the top of the supporting plates 4. A T-shaped slide groove is provided on the side of the supporting columns 5 close to the furnace wall 1. The movable sleeve 6 is slidably connected to the outer side of the supporting columns 5. A T-shaped slider slidably connected in the T-shaped slide groove is fixedly installed on the inner side wall of the movable sleeve 6, so that the movable sleeve 6 has better stability when moving.

[0030] The two moving mechanisms include a rack 72, an AC motor 73, and a gear 74. A mounting groove 71 is provided on the outer side of the support column 5. The rack 72 is fixedly mounted on the inner wall of the mounting groove 71. The AC motor 73 is fixedly mounted on the side of the moving sleeve 6 away from the furnace wall 1. The gear 74 is fixedly mounted on the output shaft end of the AC motor 73 and the gear 74 is meshed with the rack 72.

[0031] The sealing mechanism includes a furnace cover 8, a first sealing ring 9 and a second sealing ring 10. The furnace cover 8 is fixedly installed between the outer sides of the two movable sleeves 6. The first sealing ring 9 is fixedly installed at the bottom of the furnace cover 8. A first sealing groove is provided at the bottom of the first sealing ring 9. The inner side wall of the first sealing groove is tightly fitted with the outer side of the furnace wall 1. The second sealing ring 10 is fixedly installed at the bottom of the furnace cover 8 and is located on the inner side of the first sealing ring 9. A second sealing groove is provided at the bottom of the second sealing ring 10. The inner side wall of the second sealing groove is tightly fitted with the outer side of the inner furnace 3.

[0032] In this embodiment, the AC motor 73 drives the gear 74 to rotate, and the gear 74 engages with the rack 72 in the mounting groove 71, so that the rotating gear 74 can drive the movable sleeve 6 to move up and down on the outside of the support column 5, and the movable sleeve 6 can drive the furnace cover 8 to complete the opening and closing action, and through the contact between the first sealing ring 9 and the furnace wall 1 and the contact between the second sealing ring 10 and the inner furnace 3, the toxic gas in the nitriding furnace will not leak.

[0033] See also Figure 1 Or 3-4, a salt bath nitriding furnace salt adding sealing structure in this embodiment, a feeding mechanism is arranged on the sealing mechanism, a dosing mechanism is arranged on the sealing mechanism, a material guiding mechanism is arranged on the dosing mechanism, the feeding mechanism includes a feeding pipe 11, a first valve 12, a storage bin 13, a material guiding pipe 14, a second valve 15 and a quantitative tank 16, the feeding pipe 11 is fixedly connected to the top of the furnace cover 8, the first valve 12 is fixedly installed on the outside of the feeding pipe 11, the storage bin 13 is fixedly connected to the top of the feeding pipe 11, the material guiding pipe 14 is fixedly connected to the top of the storage bin 13, the second valve 15 is fixedly installed on the outside of the material guiding pipe 14, and the quantitative tank 16 is fixedly connected to the top of the material guiding pipe 14.

[0034] The dosing mechanism includes a support rod 171, a top plate 172, a fixed plate 173, a guide rod 174, a servo motor 175, a screw rod 176, a movable plate 177, a connecting rod 178 and a quantitative plate 179. There are two support rods 171, and the two support rods 171 are fixedly installed on the top of the furnace cover 8. The top plate 172 is fixedly installed between the tops of the two support rods 171, the fixed plate 173 is fixedly installed on the outside of the support rods 171, the guide rod 174 is fixedly installed between the top plate 172 and the fixed plate 173, the servo motor 175 is fixedly installed on the top of the top plate 172, the screw rod 176 is fixedly installed on the output shaft end of the servo motor 175, the movable plate 177 is threadedly connected to the outside of the screw rod 176 and slidably connected to the outside of the guide rod 174, the connecting rod 178 is fixedly installed at the bottom of the movable plate 177, and the quantitative plate 179 is fixedly installed at the bottom of the connecting rod 178. The outer side of the quantitative plate 179 is tightly fitted with the inner side wall of the quantitative tank 16.

[0035] The material guiding mechanism includes a feed port 18, two feed pipes 19, a solenoid valve 20 and a material guiding plate 21. The feed port 18 is fixedly installed on the inner side of the top plate 172 and is fixedly connected to the quantitative tank 16. The two feed pipes 19 are fixedly connected to the bottom of the quantitative plate 179. The solenoid valve 20 is fixedly installed on the outer side of the feed pipe 19. The material guiding plate 21 is fixedly installed on the inner side wall of the quantitative tank 16. A conical groove 211 is provided on the top of the material guiding plate 21, and the conical groove 211 is fixedly connected to the material guiding pipe 14.

[0036] In this embodiment, the base salt or adjustment salt is first quantitatively added to the storage bin 13 through the quantitative tank 16, and then the storage bin 13 is sealed, so that the toxic gas in the nitriding furnace will not be released when adding materials, thereby improving the safety of the staff and ensuring the personal safety of the staff.

[0037] The working principle of the above embodiment is as follows: the base salt or adjustment salt to be added is added into the quantitative tank 16 through the feed port 18, and at the same time, the servo motor 175 drives the screw 176 to rotate, and the screw 176 drives the movable plate 177 connected to the outer thread to move up and down, and the movable plate 177 drives the quantitative plate 179 at the bottom of the connecting rod 178 to move up and down, so that the capacity of the quantitative tank 16 can be adjusted, so that the amount of base salt or adjustment salt added can be guaranteed according to the quantitative tank 16, and then the addition of the base salt or adjustment salt is guaranteed to be accurate, the second valve 15 is opened, and the solenoid valve 20 is opened, so that the quantitative tank 16 is opened. The base salt or adjustment salt on the plate 179 will enter the storage bin 13 through the guide pipe 14. When the base salt or adjustment salt has completely entered the storage bin 13, the second valve 15 is closed and the first valve 12 is opened, so that the base salt or adjustment salt in the storage bin 13 will enter the inner furnace 3 through the feed pipe 11, thereby completing the feeding of the nitriding furnace. In this way, the base salt or adjustment salt is first quantitatively added to the storage bin 13 through the quantitative tank 16, and then the storage bin 13 is sealed, so that the toxic gas in the nitriding furnace will not be released during the feeding, thereby improving the safety of the staff and ensuring the personal safety of the staff.

Claims

1. A salt bath nitriding furnace salt sealing structure, comprising a furnace wall (1), two heating components (2) and one inner furnace (3), characterized in that: The two heating components (2) are fixedly mounted on the inner side wall of the furnace wall (1), the inner furnace (3) is fixedly mounted on the inner side wall of the furnace wall (1), a supporting mechanism is arranged on the outer side of the furnace wall (1), two moving mechanisms are arranged on the supporting mechanism, a sealing mechanism is arranged on the supporting mechanism, a feeding mechanism is arranged on the sealing mechanism, a material setting mechanism is arranged on the sealing mechanism, and a material guiding mechanism is arranged on the material setting mechanism; the supporting mechanism comprises two supporting plates (4), a supporting column (5), and a moving sleeve (6), the two supporting plates (4) are fixedly mounted on the outer side of the furnace wall (1), the supporting column (5) is fixedly mounted on the top of the supporting plate (4), and the moving sleeve (6) is slidably connected to the outer side of the supporting column (5).

2. The salt bath nitriding furnace salt adding sealing structure according to claim 1, characterized in that: The two moving mechanisms include a rack (72), an AC motor (73), and a gear (74); a mounting groove (71) is provided on the outer side of the support column (5); the rack (72) is fixedly mounted on the inner wall of the mounting groove (71); the AC motor (73) is fixedly mounted on a side of the moving sleeve (6) away from the furnace wall (1); the gear (74) is fixedly mounted on the output shaft end of the AC motor (73), and the gear (74) and the rack (72) are meshed.

3. The salt bath nitriding furnace salt adding sealing structure according to claim 1, characterized in that: A T-shaped sliding groove is provided on one side of the support column (5) close to the furnace wall (1), and a T-shaped sliding block is fixedly mounted on the inner side wall of the movable sleeve (6) and is slidably connected in the T-shaped sliding groove.

4. The salt bath nitriding furnace salt adding sealing structure according to claim 1, characterized in that: The sealing mechanism comprises a furnace cover (8), a first sealing ring (9) and a second sealing ring (10); the furnace cover (8) is fixedly mounted between the outer sides of the two movable sleeves (6); the first sealing ring (9) is fixedly mounted at the bottom of the furnace cover (8); and the second sealing ring (10) is fixedly mounted at the bottom of the furnace cover (8) and is located on the inner side of the first sealing ring (9).

5. The salt bath nitriding furnace salt adding sealing structure according to claim 4, characterized in that: The feeding mechanism comprises a feeding pipe (11), a first valve (12), a material storage bin (13), a material guide pipe (14), a second valve (15) and a quantitative tank (16); the feeding pipe (11) is fixedly connected to the top of the furnace cover (8); the first valve (12) is fixedly installed on the outside of the feeding pipe (11); the material storage bin (13) is fixedly connected to the top of the feeding pipe (11); the material guide pipe (14) is fixedly connected to the top of the material storage bin (13); the second valve (15) is fixedly installed on the outside of the material guide pipe (14); and the quantitative tank (16) is fixedly connected to the top of the material guide pipe (14).

6. The salt bath nitriding furnace salt adding sealing structure according to claim 5, characterized in that: The metering mechanism comprises a support rod (171), a top plate (172), a fixed plate (173), a guide rod (174), a servo motor (175), a screw rod (176), a movable plate (177), a connecting rod (178) and a metering plate (179). The number of the support rods (171) is two, and the two support rods (171) are fixedly mounted on the top of the furnace cover (8). The top plate (172) is fixedly mounted between the tops of the two support rods (171), and the fixed plate (173) is fixedly mounted on the outer sides of the support rods (171). The guide rod (174) is fixedly mounted between the top plate (172) and the fixed plate (173); the servo motor (175) is fixedly mounted on the top of the top plate (172); the screw rod (176) is fixedly mounted on the output shaft end of the servo motor (175); the movable plate (177) is threadedly connected to the outer side of the screw rod (176) and slidably connected to the outer side of the guide rod (174); the connecting rod (178) is fixedly mounted on the bottom of the movable plate (177); and the quantitative plate (179) is fixedly mounted on the bottom of the connecting rod (178).

7. The salt bath nitriding furnace salt adding sealing structure according to claim 6, characterized in that: The material guiding mechanism comprises a material feed port (18), two material feeding pipes (19), a solenoid valve (20) and a material guiding plate (21); the material feed port (18) is fixedly mounted on the inner side of the top plate (172) and is fixedly connected to the quantitative tank (16); the two material feeding pipes (19) are fixedly connected to the bottom of the quantitative plate (179); the solenoid valve (20) is fixedly mounted on the outer side of the material feeding pipe (19); and the material guiding plate (21) is fixedly mounted on the inner side wall of the quantitative tank (16).

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